Formula
d = sqrt((x₂ − x₁)² + (y₂ − y₁)²)
This is the standard Euclidean distance formula used in coordinate geometry.
Example
Between (2, 3) and (6, 8), the distance is sqrt(4² + 5²) = 6.40.
FAQs
Can this be extended to 3D?
Yes. In 3D, add the z-difference squared as well.
Is this the same as slope?
No. Slope measures steepness; distance measures length between points.